MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

B. Riley Wealth Advisors, Inc.'s Holding History (CIK: 0001464811)

Note: Option positions (PUT/CALL) are excluded.

Q1 2015
Shares 3,970 Value ($000) $262 Avg Close — Range —
Q4 2014
Shares 3,945 Value ($000) $265 Avg Close — Range —
Q3 2014
Shares 3,222 Value ($000) $247 Avg Close — Range —
Q2 2014
Shares 1,822 Value ($000) $130,389 Avg Close — Range —
Q1 2014
Shares 2,214 Value ($000) $145 Avg Close — Range —
Q3 2013
Shares 2,817 Value ($000) $203 Avg Close — Range —
Q2 2013
Shares 2,896 Value ($000) $194 Avg Close — Range —